Appendix G Comments and Responses

This document is Appendix G of the Seattle-Tacoma International Airport Part 150 Noise Study, compiling public comments and official responses gathered during the study's development. It covers a wide range of topics organized into three main areas: Part 150 regulations and noise exposure maps (including noise metrics, flight tracks, and FAA guidelines), current airport operations and community concerns (such as flight paths, nighttime operations, and the sound insulation program), and miscellaneous issues like health effects, air quality, and property values. Comments were collected through multiple channels including public open houses, workshops, the study website, and email.

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Appendix G of the Seattle-Tacoma International Airport Part 150 Noise Study, containing all public comments and responses received during study development. Includes topic-specific responses organized into three main categories: Topic 1 (Part 150 Regulations and Noise Exposure Maps, covering DNL metric, AEDT/noise methodology, flight tracks, NCP recommendations, NOMS), Topic 2 (Current Airport Operations including arrival/departure flight paths, north/south flow, early morning and nighttime operations, ground noise, aircraft altitude, SEA Sound Insulation Program), and Topic 3 (Other/Miscellaneous including health effects of noise, property values, air quality, vibration, NEPA/SAMP Environmental Assessment). Comments gathered from Kick-off Open House, Draft NEM Public Workshop, Part 150 Study website, and email. Prepared by ESA (project number D202201341.00).

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